Improvement in machines for trimming boot and shoe heels and sole-edges



, 28h Sh 2. -n. c LAMBERT. ee w lmprovmenfin-Machines'for Trimming Boot'and Shoe Heelsand Sole-Edges. No. 115,219. Patemedmay 23,1871.

UNITED STATES PATENT OFFICE- RIGHARDC. LAMBRRnoF QU1nov,A`sSieNoR cro HIMSRLF AND JOHN R. noLsoM, on STONRHAM, MASSACHUSETTS.

IMPROVEMENT IN MACHINES `FOR TRIMMINGLBOOTAND SHOE HEELS AND SOLE-EDGES.

` Specication forming part of Letters Patent No. l`15,'219, dated May 23, 1k 7 l.

To all whom it may concern:

Be it known that I, RICHARD G. LAMBERT, of Quincy, `in the county of Norfolk and State ofMa-ssachusetts, have invented an Improved Machine for ,'lmmin g the Heels and Toepart Edges of Boots and Shoes; and" Ido hereby declare that the following, taken in connection with the drawing which accompanies and forms part of `this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.

My invention relates to the organization of a machine for trimming at one continuous operation the heel and forepart soleedges of boots and shoes, the boot or shoe being jacked to a suitable carriage which has a feed movelnent such as to bring the whole length of the heel and sole-edge to the action of a stationary knife or cutter, or a knife or cutter which only has movement to conform to the irregular contour of the edge. Around the jacked boot or shoe, near the sole, extends a guide or pattern rail-or frame, one edge of which is formed with a contour corresponding to the shape to be given to the heel and sole-edge; and on this guide rests a gage from which the cutter extends, the carriage to which the sole is jacked having combined longitudinal and circular movements, during which movements -the gage rests upon thepattern-edge, and

therebjT controls the cutting position of the knife. It is in the combination of a carriage having longitudinal and circular movements, and having provision for jacking to it the boot or shoe, the heel and sole edges of which are to be trimmed, a pattern or guide-frame encompassing the boot or shoe near the edge,

and a Aknife or cutter extending from a gage which rests upon or is held to theedge of the pattern or guide-frame, that my invention primarily consists, certain details of construction and arrangement also forming parts of the invention.

The drawing represents a machine embodying my improvements.

Figure l is a front elevation of the operative parts of the machine. Fig. 2 is a plan of the same. Fig. 3 is a front-'end view thereof. Fig. 4 is a rear-end view thereof.

adenotes a frame, in which is jonrnaled a shaft, I), carrying on its front end a guderail,

c, on which is mounted and slides the carriage `racks, the shaft passing through" the gearplate, lwhich has an oblong slot or opening, j', to permit the gear to move endwise. The gear-plate is driven by a gear, g, which may be driven by a pinion, h, on a crankshaft, c', or in any other suitable manner; and, as the gear-plate is actuated, `it moves straight forward until the circular gear-teeth reach the driving-gear, then turns on the shaft b as an axis, reversing its position; then moves forward again until the circular teeth at the opposite end reach the driving-gear, and then again turns (at its opposite end) upon the shaft b as an axis, and thus completes its movement, the guide-plate making a complete rotation, and the carriage. in its end movements' sliding upon said guide-plate and in its rotative movements turning with said plate. At the front of the carriage is an auxiliary `slide or jack, 76, to which the boot or shoe l is immediately jacked.V This slide is adjustable,

being retained in any suitable position along the main carriage'by clamp-screws m. At the front end of the slide or jack is a toeblock,

n, and near its rear end is a last-pin, o, and by these or other suitable fastenings the boot or shoe upon a last lis jacked to the carriage, standin g out therefrom, as seen at Fig. 2. At the rear end of the jack is a projection, p, to which is fixed the heel end of a' guide-rail or pattern-frame, q, which frame extends entirely around the lasted and jacked boot or shoe, at a slight distance back from the edge there of, as seen in Fig. l. This guide-rail or frame is preferably made in two parts, connected by a hinge, r, the movable piece s swinging up to facilitate removal or jacking of the boot or shoe, and the two parts being locked together by a hook, t, or any other suitablefas'tening device. Extending around the frame is a guiding-edge or ledge, u, the periphery of which is of the exact pattern to be given to the sole and heel-edge, and upon this edge sets a gage-block, fu, having a vertical guidepiece, w, the inner face of which sets against the front face of the guiding-edge or lip a. The gage-block e, a head, w, and end-piece y, form together a stock for the trimming-knife or cutter z, and when the machine is in operation the position ofthe gage upon the ledge or guide-rail q insures the proper position of the inner end of the cutting-edge to eect the trimming of the edge of the sole to the requisite contour. The pattern-frame or rail is removably attached to the jack-slide, and by having a set of these pattern-frames diilerent sizes and shapes of boots and shoes may have their heel and sole edges trimmed. The inner end of the gage and cutter-stock is pivoted to a knuckle, a2, and its outer end to a swivelpiece, b2, journaled in the foot of a vertical slide, @Zand by the pivots d2 e2 the knife can rock so as to keep at a proper cutting-angle of presentation throughout the variouslycurved parts of the heel and sole edges. The knuckle a2 is jointed to the bottom of a vertical slide, f2, the two slides c2 f2 passing through a head, g2, and being connected by a cross-rod, h2, which, by a link, i2, is jointedto a lever, k2, pivoted at l2, the cutter being raised from working position by lifting the lever, and the gage-block being kept in contact with the guide-rail by forcing down the lever. The head. g2 is pivoted, by a pin, m2, to an arm,- n.2, of the main frame, and by means of this pivot the cutter-head and frame can be swung laterally outward from or inward into position, and can be held further in or out for different pattern-frames and sizes and styles of boots or shoes. In trimming the heel to a proper inclination provision is necessary for canting the cutter, and a guide is necessary for 'the outer end of the cutter. For the guide I use a heel-plate or pattern, o2, which I clamp to the outer heel-lift by an auX- iliary frame, which may consist of a bar, p2, pivoted to the carriage cl at g2, and having two bent arms, r2, through which passes a slide-rod, s2, at the inner end of which is the heel-plate 02, which heel-plate may be forced up and locked against the heel by a bolt, u2, passing through slot v2 in the rod; and to permit the knife or cutter to tip, the knuckle a? is pivoted to the slide c2, as seen at x2, and the opposite end of the cutter is pivoted at y2, so that the cutter can assume any requisite angle, the link i2 being slotted, and the cross-rod h2 pivoted, and the slide f2 moving freely in the head to permit free vertical swiveling movement of the cutter, and to permit the outer end ofthe cutter to fall down to and cut against the heel-plate.

The downward pressure upon the link i2 forces the cutter down to the requisite angle, or until the knife reaches the heel-plate.

When the sole edge is being trimmed the heelplate clamping mechanism may be swung around to the end of the machine on the pivot, and when the heel comes into position t0 be trimmed said mechanism is swung into position and the heel-plate clamped by it to the heelV of the boot lor shoe.

I claim- 1. In combination, a boot or shoe holding jack, having forward and backward and semirotative movements, a pattern-frame or guiderail, (extending entirely around the boot or shoe near the so1e,) and a non-rotative knife or cutter, having a gage resting upon the guide-rail, while the entire length of the rail runs under it, and thereby controlling the position of the cutter and the curve or contour of the edge of the sole and heel trimmed by the cutter, substantially as shown and described.

2. The rotary guide-bar c and the jack-carriage sliding upon said bar, arranged and combined substantially as shown and described.

3. The oblong gear or gear-plate fixed to the rear ofthe carriage, and slotted to permit the shaft to extend through the plate and the plate to ride longitudinally, substantially as shown and described.

4. The auxiliary jack or jack-carriage, adjustably fixed to and sliding upon the main carriage, substantially as shown and described. Y

5. The cutter-stock, hung by pivots to permit the edge to automatically tip and assume a cutting-angle in accordance with the varying curve of the edge of the sole, and also hung by pivots to permit it to tip to cut the requisite inclination or bevel to the heel-edge.

6. The cutter-frame, (composed of the slide to whichl the cutter-stock is pivoted and the pivoted crossrod,) the head to which said frame is hung, and the link and lever for raising or pressing down the cutter-frame, combined and arranged substantially as shown and described.

7. 'Bhe cutter-frame head, hung upon a pivot by which it can be moved laterally, sub-` RICHARD C. LAMBERT.

Witnesses: FRANCIS GoULD,

M. W. FRoTHrNeHAM. 

